function Hv= H( alpha,beta )
%UNTITLED2 Summary of this function goes here
%   Detailed explanation goes here
k=[cos(alpha)*cos(beta);
    cos(alpha)*sin(beta);
    sin(alpha)];
r{1}=[1/4 0 0]; % Antena
r{2}=[-1/4 0 0];

phi=nan(2,1);

for i=1:2
    phi(i)=2*pi*r{i}*k;
end
Hv=exp(1i*phi);

end

